What to do if you can't read the hard drive after computer boot

The solution to the hard drive after computer boot:

Just bought the computer boot ready to the hard disk partition install the operating system, but at this time, the problem arises, the machine to start self-test after the prompt can not find the hard disk

In the beginning, I think it is the motherboard bios in the PATA hard disk interface to shut down. Due to the use of a 915P motherboard to provide support for SATA hard drives, it is most likely that the motherboard will be shipped with the motherboard BIOS default set to SATA hard drive mode and the Pata interface off.

As a friend of this computer does not use any SATA devices, so press the DEL key into the motherboard BIOS, select the P-ata Ports only option, will be the motherboard on the SATA hard disk interface All shielded, only use parallel interface devices. After pressing the F10 key, save the motherboard BIOS setup and exit, the system is automatically restarted.

After the computer, the system is still prompted not to find the hard drive, again into the motherboard BIOS settings, found in the IDE main channel of the connection does not show any information on the hard drive, hard disk or the motherboard has a problem? The newly purchased hard drive should not have such a problem? With these questions.

The author takes the hard drive out of the machine, in another computer that works properly, hanging from the disk to check the hard drive, the BIOS on the motherboard, we see the hard drive from the IDE's secondary channel, and for more accurate answers, we do the operating system, in Disk Management, We saw this hard drive lying there quietly, partition the hard disk, format the operation, and the part of the data into a hard disk partition, the conclusion is that the hard disk is completely normal.

I still do not give up, so will a normal use of the hard disk into the new machine, the system is still prompted to find the hard drive, and in the motherboard BIOS also nothing, to some, the failure caused by the hard disk is completely denied.

So I began to suspect the object to the motherboard, since the machine can be successfully self-test, and in the BIOS in the main channel IDE2 we can also find the installation of the DVD burner, the motherboard failure is not likely to be a IDE1 interface problems? Or a failure caused by a corrupted data line.

So the author of the IDE2 interface in the DVD burner line and power cord are all removed, the optical drive used by the cable to the IDE interface to the hard disk, the power supply, the system still shows after the boot cannot find the hard drive, and the motherboard BIOS still does not have any available IDE devices.

This is really stumped the author, the motherboard hard disk is not a problem, it is not the power supply caused by the fault, in theory, 300W power supply can fully meet the needs of this machine. There is no other way, only to replace the power supply to try.

And then spent more than half of the day, the power from the two chassis out, and a century star freedom Fighter II power supply to the new installed power. Boot, the system through a variety of self-test, smoothly into the requirements of the installation of the operating system prompts screen. And we see the hard drive information in the IDE main channel in the motherboard BIOS. At this point, the root of the problem has finally been found.

Since the power has been removed, so the author with a curious mentality, the fault of the power to connect to their own computer. After the boot all show normal, the machine smoothly into the operating system, this power does not seem to have any problems!!

In the use of a surprising thing happened, the computer has been using a good optical drive now can not be used, the CD-ROM door in any case can not open. At this point also finally make the author suddenly, hard to be used to the hard drive power supply of a four pin angle of the problem.

With doubt, the author shut down the machine, will be another redundant power four-pin interface into the optical drive, restart the machine, press the CD-ROM door open the optical drive to test the cause of the problem, all normal, play DVD and so there is no problem. At this point, the question finally got a satisfactory answer.

Hint: Now some second-line brand inside the chassis with the power of the work is relatively poor, do not recommend users to buy. If you can not find a hard drive or other equipment, friends may wish to change the power supply interface to try. In addition, I recommend the user as far as possible to select the first line of the brand power and chassis manufacturers, quality and credibility will have a good guarantee.